AUTOMOTIVE TPMS
ICs for Tire-pressure Monitoring Systems
Atmel® offers highly integrated circuits for battery-powered sensor-gauge and base-station applications in
tire pressure monitoring systems (TPMS). The TPMS product portfolio includes a low-power Flash-micro-
controller RF-transmitter IC family to be used along with separate capacitive pressure or motion sensors,
plus a broad range of standalone RF-transmitter and LF-receiver ICs that can be combined with sepa-
rate microcontroller or smart sensor devices. These TPMS ICs are suitable for temperatures up to 125°C
(extended storage temperatures up to 175°C), and they provide outstanding low current consumption,
which helps the sensor gauges achieve 10-year longevity.
The TPMS portfolio also includes an innovative transparent RF receiver IC family with very fast switch-
ing times between RKE and TPMS signals. These ICs are capable of covering all physical functions
needed for combined TPMS/RKE systems. The polling mode and bit-check functions are carried out by
the firmware in a separate microcontroller device such as Atmel’s LIN multichip module ATA6612 with
integrated AVR®.
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Ultra Low-Power Microcontroller Transmitter
ICs ATA6285/ATA6286 for Sensor Gauges
Cutting Edge for Sleep Mode Current: 1.2 µA at
Integrates the Transmitter IC ATA5756/ATA5757
85ºC with Active Interval Timer
with a Dedicated 8-bit AVR Flash Microcontroller
Providing Capacitive Sensor Interface, LF Chan-
nel, Temperature Sensor, and 90-kHz Slow-os-
cillation Mode
ATA6285: 315 MHz, ATA6286: 433 MHz
8 Kbytes In-system Self-programmable Flash
and 320 Bytes EEPROM
Lowest Current Consumption (0.6 µA Sleep
Mode, 200 µA Measurement Mode)
QFN32 Package (5 mm × 5 mm)
Transmitter ICs ATA5756/ATA5757
ATA5756: 315 MHz (North America), ATA5757:
433 MHz (Europe) and 448 MHz (Korea)
Settling Time <0.85 ms Typically and Reduced Ac-
tive Current Consumption for Extended Lifetime
3-Wire Bus Interface
Highly Flexible RF Transmitter IC ATA5749
for Single Board Design
315/433 MHz Operation in ASK/FSK Modula- RF Frequency Channelling
tion with Single 13 MHz Crystal
Fully Integrated Fractional –N PLL
–0.5 dBm to 12.5 dBm Scalable Using Output
Power Programming
Data Rate up to 40 Kb/s (Manchester)
Very Fast Crystal Oscillation Start-up Time
(200 µm)
Supply Voltage 1.9 to 3.6V
TSSOP10
Active Current Consumption 7.3 mA at 5.5 dBm
Transparent RF Receiver ICs ATA5745/ATA5746
for Combined RKE/TPMS Car Modules
ATA5745: 433 MHz, ATA5746: 315 MHz
Extremely Fast Switching Rate Between RKE
and TPMS Signals: <1 ms (Typically)
Achieved Even with a Low Number of External
Components
Polling Mode and Bit Check Carried Out by Exter-
High System Sensitivity and Selectivity Can Be
nal Firmware
LF Receiver IC ATA5283
LF Antenna Driver IC ATA5276
World’s Smallest Standalone LF Receiver IC for 1.5-APP Antenna Driver for 125-kHz Operation
125ºC/257ºF Systems (TSSOP8 Package)
Ultra Low Current Consumption (1.3 µA in Listen-
ing Mode with Sensitivity of 1 mV (Typically)
Frequency Self-tuning to the LF Antenna Reso-
nance Frequency
Built-in Diagnosis Function
Built-in Digital AGC to Amplify Input Signal from Operation Temp –40ºC/F to +105ºC/221ºF
the Coil
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Headquarters
Atmel Corporation
2325 Orchard Parkway
San Jose, CA 95131
USA
Tel: (1) 408 441-0311
Fax: (1) 408 487-2600
TPMS System Status and Trends:
Battery-powered and Batteryless Systems
Strong Trend Towards Low-cost TPMS Systems Forces Car
Manufacturers to Use Low-cost (Battery-powered) Sensor Gauges
First Vehicle Platforms Equipped with Battery-powered Bi-directional
Channel LF/RF POD Systems (Autolocation Functionality, 100%
Confidence Level of Pressure Monitoring)
International
Atmel Asia
Room 1219
Chinachem Golden Plaza
77 Mody Road, Tsimshatsui
East Kowloon
First Autolocation Platforms Evolve Based on Plausibility System Check Using
Double-axis Motion Sensors (Advanced Remote Systems)
Further Trend Towards Higher Integration Level of Combined RKE/TPMS Modules
Currently No Existing Platform with Batteryless Technology, Various Approaches
Still in Discussion
Hong Kong
Tel: (852) 2721-9778
Fax: (852) 2722-1369
Atmel Europe
Le Krebs
8, Rue Jean-Pierre Timbaud
BP 309
78054 St Quentin-en-
Yvelines Cedex
France
Tel: (33) 1-30-60-70-00
Fax: (33) 1-30-60-71-11
Frequency
Range [MHz]
Part Number
Key Features
Package
UHF Transmitter ICs
Atmel Japan
9F, Tonetsu Shinkawa Bldg.
1-24-8 Shinkawa
Chuo-ku, Tokyo 104-0033
Japan
Tel: (81) 3-3523-3551
Fax: (81) 3-3523-7581
ATA5756
ATA5757
315
433
ASK/FSK UHF TPMS Transmitter ICs, From 2.0V
TSSOP10
TSSOP10
ATA5749
315/433
ASK/FSK UHF TPMS Transmitter IC, Fully Programmable by the
Microcontroller, Single-board Design for Both Frequencies with Single
13 MHz Crystal Type, From 1.9V
UHF Receiver ICs
Product Contact
ATA5723
315
433
868
UHF Remote Control Receiver, 300 kHz Bandwidth RSSI
Pin Compatible to ATA5724, ATA5728
SSO20
SSO20
SSO20
QFN24
Product Line
ATA5724
ATA5728
UHF Remote Control Receiver, 300 kHz Bandwidth, RSSI
Pin Compatible to ATA5723, ATA5728
Literature Requests
UHF Remote Control Receiver, 600 kHz Bandwidth, RSSI
Pin Compatible to ATA5723, ATA5724
Web Site
ATA5745
ATA5746
433
315
Transparent UHF Receiver IC with Fast RKE/TPMS Switching Rate,
Suitable for 1 to 20 Kbits/s Manchester FSK with 4 Programmable
Bit-rate Ranges, High FSK Sensitivity (–114 dBm at 2.4 Kbits/s),
High Blocking Capability
ATA5811
ATA5812
433
315
Fast Switching Rate between TPMS and RKE Receive Modes
QFN48
TSSOP8
QFN20
QFN32
LF Receiver ICs
ATA5283
125 kHz
Industry-leading Ultra Low Power ASK Receiver IC with Minimum
Current Consumption and Maximum Sensitivity
LF Antenna Driver ICs
ATA5276
125 kHz
1.5-APP Antenna Driver IC with Frequency Self-tuning to the LF
Antenna Resonance Frequency and Built-in Diagnosis Function
© 2008 Atmel Corporation.
All rights reserved.
Microcontroller Transmitter ICs
Atmel®, logo and combinations there-
of, AVR® and others are registered
trademarks or trademarks of Atmel
Corporation or its subsidiaries. Other
terms and product names may be
trademarks of others.
ATA6285
ATA6286
315
433
Single-package Microcontroller Transmitter Including 8-bit Flash AVR
Microcontroller with Capacitive Sensor Interface, 125-kHz Receiver
Channel, Temperature Sensor, 90-kHz Slow-oscillation Mode
Microcontrollers
ATAM893
4 KB Flash-ROM/32 × 16-bit EEPROM
2 KB ROM/32 × 16-bit EEPROM
4 KB ROM/32 × 16-bit EEPROM
SSO20
SSO20
SSO20
Rev.: 4616C-TPMS-04/08/02M
ATAR890
ATAR892
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products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life.
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